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Plant growth regulating agent

Pending Publication Date: 2022-03-31
IDEMITSU KOSAN CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a plant growth regulating agent that can make plants resistant to environmental stress. It is safe for humans, cost-effective, and can efficiently improve the plants' ability to resist environmental stress. Additionally, it can promote plant growth and fight antimicrobial infections in plants.

Problems solved by technology

However, agricultural field available for crop cultivation are limited, and it has been said, moreover, that environmental factors such as global warming and unseasonable weather are causing loss of the crop yield.
The breeding, and the preparation of a recombinant crop have drawbacks in that they are applicable only to a limited number of crop species, that the place for the cultivation is limited, and that the breeding, and the preparation of the recombinant crop are time-consuming and costly.
There are problems, however, that the plant growth regulating agents according to the conventional techniques have low storage stability and safety, and especially that the stress resistance-improving effect is insufficient.
However, for stable improvement of the environmental stress resistance of a plant, the method requires treatment at several ppm to several ten ppm, and extraction of the component from a plant requires solvent extraction treatment, subcritical water extraction treatment, and thermal extraction treatment, so that its industrial mass production is not easy.
Moreover, since the component has low storage stability, production of its stable effect requires a plurality of times of treatment.
However, there has been no suggestion on an effect that improves the resistance to an environmental stress.
Furthermore, although it is known that plants placed under dry stress conditions exhibit stress response which causes accumulation of flavonoids in the body, effectiveness of external application of flavonoids by foliar spraying or the like has not been shown (Non-patent Document 3).
Although Patent Document 1 suggests that foliar spraying of hesperidin to a plant produces growth-promoting effects such as an increase in the weight of the above-ground part and an increase in the yield, there have been neither data based on its practical use, nor data on an effect that that improves the resistance to an environmental stress.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

erature Stress Petri Dish Test (Lettuce)

[0055]Purpose: Comparison with Other Natural Products in Terms of the Effect

Methods:

[0056]For seeds, 2% water agar medium (using water as the solvent), which was prepared such that hesperidin or the like was contained at a final concentration of 0.1 ppm as shown in Table 1, was filled into square Petri dishes (“model number: D-210-16”, manufactured by As One Corporation). Before high-temperature treatment, lettuce (Green Wave, Takii & Co., Ltd.) was sown on 2% water agar medium, and lettuce seedlings on day 2 after the sowing were transplanted to the above-described agar medium to which the hesperidin or the like was added. At the time of the transplantation, the tip of the root was marked. Each Petri dish after the transplantation was placed in an incubator (“model number: FLI-2010A”, manufactured by EYELA) at an angle of 45° with respect to the bottom surface, and high-temperature treatment was carried out at 42° C. for 1.5 hours. Thereafter...

example 2

erature Stress Petri Dish Test (Lettuce)

[0058]Purpose: Evaluation of the Synergistic Effect by Blending with Neohesperidin

Methods:

[0059]For seeds, 2% water agar medium (using water as the solvent), which was prepared such that hesperidin (Fujifilm Wako Pure Chemical Corporation; special-grade reagent) and neohesperidin (Fujifilm Wako Pure Chemical Corporation; special-grade reagent) were contained at the predetermined final concentrations shown in Table 2, was filled into square Petri dishes (“model number: D-210-16”, manufactured by As One Corporation). Before high-temperature treatment, lettuce (Green Wave, Takii & Co., Ltd.) was sown on 2% water agar medium, and lettuce seedlings on day 2 after the sowing were transplanted to the above-described agar medium to which the hesperidin and / or the like was / were added. At the time of the transplantation, the tip of the root was marked. Each Petri dish after the transplantation was placed in an incubator (“model number: FLI-2010A”, manuf...

example 3

erature Stress Petri Dish Test (Lettuce)

[0061]Purpose: Evaluation of the Synergistic Effect by Blending with β-Carotene, which is a Natural Product Contained in Citruses

Methods:

[0062]For seeds, 2% water agar medium (using water as the solvent), which was prepared such that hesperidin (Fujifilm Wako Pure Chemical Corporation; special-grade reagent) and neohesperidin (Fujifilm Wako Pure Chemical Corporation; special-grade reagent) were contained at the predetermined final concentrations shown in Table 3, was filled into square Petri dishes (“model number: D-210-16”, manufactured by As One Corporation). Before high-temperature treatment, lettuce (Green Wave, Takii & Co., Ltd.) was sown on 2% water agar medium, and lettuce seedlings on day 2 after the sowing were transplanted to the above-described agar medium to which the hesperidin and / or the like was / were added. At the time of the transplantation, the tip of the root was marked. The Petri dish after the transplantation was placed in ...

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Abstract

The present invention aims to provide a plant growth regulating agent for improving environmental stress resistance of a plant, for growth promotion of a plant, or for antimicrobial purpose in a plant, and provides a plant growth regulating agent for improving environmental stress resistance of a plant, for growth promotion of a plant, or for antimicrobial purpose in a plant, the plant growth regulating agent including hesperidin or a hesperidin derivative, or a flavonoid, as an effective component.

Description

TECHNICAL FIELD[0001]The present invention relates to a plant growth regulating agent having an effect that improves the resistance of a plant to environmental stress. The present invention also relates to a plant growth regulating agent for growth promotion of a plant, and for antimicrobial purpose in a plant.BACKGROUND ART[0002]In the light of the explosive growth of the world population, there is an urgent need to increase the food supply. However, agricultural field available for crop cultivation are limited, and it has been said, moreover, that environmental factors such as global warming and unseasonable weather are causing loss of the crop yield. Thus, there is an increasing demand for plant growth regulating agents which ameliorate the effects of environmental stresses affecting crops, and which improve the yield and the quality of crops by maintenance and promotion of their growth.[0003]Examples of the method for improving the environmental stress resistance of a plant incl...

Claims

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Application Information

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IPC IPC(8): A01N43/16A01P21/00A01N35/02
CPCA01N43/16A01N35/02A01P21/00
Inventor ISHIDA, SHIORIINAI, KOJITANAKA, MOTOKINOMOTO, TAKASHI
Owner IDEMITSU KOSAN CO LTD
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